diff --git a/_includes/comments/remark42.html b/_includes/comments/remark42.html
index f17e91d..a986573 100644
--- a/_includes/comments/remark42.html
+++ b/_includes/comments/remark42.html
@@ -27,9 +27,9 @@
     if (targetDiv != null) {
         targetDiv.addEventListener("click", () => {
             if (document.documentElement.hasAttribute("data-mode")) {
-                window.REMARK42.changeTheme('dark');
-            } else {
                 window.REMARK42.changeTheme('light');
+            } else {
+                window.REMARK42.changeTheme('dark');
             }
         })
     }